1.5 Reason #3 for choosing Transit vs Sprinter: A gasoline engine. Don't Miss New Smyrna Beach RV Park In Florida, Camper Smarts - Resources for Smart RVers. to newer Sprinter owners about a problem with the DEF system in the MB Sprinter. Some key lock cylinders have different layouts (bolt in place, the key to run position, and locking tabs configurations vary). The original Sprinter Van Turbo Resonators are known to be problematic seals and O-Ring. Stay away from Sprinters. or, just buy it at the pump at a truck stop and give your Sprinter always-fresh DEF. The OXI-Cat section has an oxygen sensor an exhaust temperature sensor and a backpressure sensor. Here are 9 reasons why: 1.1 Disclosure - We buy our RVs. With over 20 years of hands-on experience working on vehicles, Mr. Hila has established himself as an expert in the field. However, if you are thinking about buying a Mercedes work van, its good to know that there is a chance these vans require consistent and costly upkeep and repairs. Retrieve a pair of jumper cables. The investigations resulted in the discovery of undisclosed auxiliary emission control devices and some so-called defeat devices that were used to cause the vehicles to produce compliant results during emissions testing. We will see. The exhaust system is comprised of a CDI (control unit) which monitors and actuates the sensors and valves in the exhaust system; a DEF pump.